Valve



Dec. 25, 1934.

E, w. BEARDSLEYY El AL VALVE Original Filed April 23, 1931 3 Sheets-Sheet 1 NTORS NY w aw Y #0 E Q M m m lww A we M Y a B Dec. 25,1934. 7 E. WfBEARDSLEY 1:1 Al, 1,935,234

VALVE 7' Original Filed April 23, 1951 3 Sheets-Sheet 2 '1 ATfoRNEY Dec; 25, 1934. E. w. BEARDSLEY El AL 1,

VALVE Original Filed April 23, 1951 3 Sheets-Sheet 5 \NVENTORS Eon/av W EEARDSLEY I f7? h/ COLONY ATEORNEY I Patented Dec. 25, 1934 I v i I UNITED STATES PATENT owls-E VALVE Application April 23, 1931,-*S erial No. 532,258 I Renewed November 21, 1933 I 5 Claims. ((11. 196-2) I Our-present invention relates to improvements type of this lattervalve is a so-called goggle valve in regenerative heating'systems' of the type emwhich in closed position will effectively prevent ployed for heatingcombustible gas and also for leakage into the stoves and which will be placed an improvedval've and seat combination for use between. th'e'first mentioned valve and the stove. v 5 therein. Thepresent invention, while of "general To prevent pressure ofgas from building up be- 5 application, is .of particular utility in a process I tween the'valvesat times when the sliding valve is for cracking oil in which relatively large quantito be operated, a lead oficonnection is preferably ties of a combustible gas are required which are provided in the'region or spool between the valves. heated to temperatures in the neighborhood of A'further featureof our invention is to provide an over.' Insuch a system for gas heating it is comconduit, for the sliding valve, which seat is movmon to employ a plurality,-usually three or more, able toward and away ,from the valve whereby a of regenerativeunits ofthe hot blast stove type thoroughly tight flt-may be had. Afurther feature in Order that he pp y o a ed as may be. I of the invention, as will be apparent, is to enable .15 tinuous. These various units are connected by a existing standard typesof valves to be'utilized, l

-common main or conduit for supplying the cold which types if used alone would be unsuitable by gas to the units and byasecond main, termed a reason of the unavoidable leakage which would hot m st main, for leading away the hot gas. occur past them, i

Valves areprovided in the, connections from Theinvention' willflbe best understood by refthestove to both mains, the arrangement permiterence to the following detailed description taken 20 ting any st oveofthe battery to be heated or fired with the accompanyingdrawings, in which. While a yother is on the heat yielding 0r blast Figure l isa diagrammaticview showing one o p as i be un rstood that when a stove is of a battery of'regenerativeheaters of the hot b i afi ffi ts connection to the hot blastmain' blast stovetyp'e which'has connection there- H will be closed,-but sincethe main is filled with hot with a pl ferred embodiment of our invention: 25

gas under pressure'irom-the stove then on blast; figure? is a plan View; of the improved valve any leakagepast this valve will cause thehotcomof the sliding type used; parts being shown in 1 bustible gas to-iind its Way into the stove on fi re jI section; 3 I I whichisunder atmospheric pressure, The inven- Figure 3*is' a viewin'vertical sectionofthe tion is accoIdingIycOncerned with-an improved,valve combination seen in Figure 1; I I arrangement of valves to-obviate this leakage in FigureA is a view "taken in section along linethe hot blast connections. IV--IV of Figure 2; I y I l-lnir rThe problem of devising a satisfactory gas 'Figure 5 is a similar view'taken along line V--V tightv valve for 'this use ofiers considerable difl'lof vthe same figure; and I I ;-culties because of the high temperature andpres- Figure 6 is adiagr'ammatic view showing the 85 sure of the heated gas, When a system of blast; operation ofthe hydraulic pistons operating the toves is usedior heating air, the problem is valveseat's. j 7 f v ,l-simpliiied by-reason of t he factrthat usually a] Referring to Figure 1,10 denotes the. regenlower pressure diiferential exists, and particularly erative heater which is provided with'a conby the fact that leakagev of air fromthe hot blast; nection 12 to the hot blast main at the left of 40 I intothe stoves'in whichcombustion is taking Figure 1, not/shown, a cold blast main 14, a cold place is not a serious matter. On the otherhand; blast-main connection 1}; having-therein a valve "'toTpern'1it" leakage of combustible gas into the 16 and a connectionjgl8 leading to stack 20 and stoves undergoing firing' or about to be fired is of havingavalve 21 therein,it being notedthat. con- Is'erio'us consequence since., aniexplosive mixture nection 15'communicates with the stove through 5 ma be formed which. would constitute menace connection 18. I I 1 to life andproperty f f, 'l I I II Asstated, twovalves are provided in the hot In accordance with our present invention we blast stoveconnection 12, a valve A of ordinary employ in each connection from the stoves to the type, preferably water cooled, and a valve B of hot blast maintainer valves, one of' which may the sliding'type provided with valve seat-sot spebe avalvepreferably watercooled, of the usual cial construction to be described. ValveB; whichtype; effg. aglobe (mushroom), or .watercooled is a so-called goggle valve, is preferably of the I" gate, ,or of the"pistontype'insertedin an elbow, double'type, having a goggle 25 and a goggle '25 and the other a valve of the slidingtype extending each consisting of the valve proper and acounter 10 1400 F. and under pressure of fifty pounds and improved form of'seat,,preferably exterior of the 10 5 across across section of the main. The preferred weight. Goggle25 comprises a lever 27 mounted in a ball bearing 28, a blind valve member 29, preferably water cooled. as shown, and, at the other end of lever 27, a counterweight 30. Goggle 25' is similarly constructed except that it contains the apertured valve member 29'. The latter is provided with arefractory lining" 30 which is seen inFigures 3 and 5. Apertured-gogglevalve member 29 is also water cooled, for which purpose a duct 32 is provided as seen in Figure3tomounted exteriorly of the conduit.

The construction is such that'ithe rin'gefl is movable back and forth along theconduit so as both to make a tight connection'with the goggle valve member .29 or 30, or to be moved fully out of such groove to permit the goggle valve to be moved. To accomplish thismovement'longitudinally of thecon'duit," a'ip'lurality of' hydraulic cylinders 42, 42, 42, 42.mayb6 rovided which are also mounted on; the conduit 12. In

1 each case, a piston 44, Figure 2, is connected to ring 40 by means of a rod 45 wherebyv the ring may bemoved backand forth by the operation of the hydraulic cylinders 42.

In order to preserve a gas-tightfitibetween the ring and the exterior of the conduit, ring 40 is provided with packing 4' 7 and a, packingjgland 48, the

' compression on which is 'adjusted'by means of the bolt and nut construction. 49. I

On the opposite sidejoifthe goggle valve from the ring 40, a valve seat member 51 is provided which extends into the groove in the goggle valve member opposite thereto}: In lieu of making this member movable, I preferably mountthe goggle valve members ior a'sli'ght movement longitudinally of the conduit. This mounting can take ;the form of bearing, shaft .53 which'may be mounted in cars 54, 55, 56, Figure 2. .Between ear 54 and the gogglevalve member is a""spring 58 tending to move, the valve'aw'ay, from valve Similar parts designated by seat member 51. I the same reference characters additioned by a prime are provided for the gogglevalve mem however, that the upper holdingrod165be swing-1 ber 25. For the purpose of locking the goggle members inplaceagaiiist the'valve seats 'independently of the hydraulic' "cylinders 42,-"tensio-n rods, four number, are providedof'whichirodfi 60 is seen in Figure 3.; This rod;passes'through the ring ,40'and'is providedwithianadjusting nut' 62 and a lock nut'cs whicl'r are..b othinthreacled engagement with 'therod 6Q.'1, It is necessary,

ably mounted as atl66 inlorder not to' interfere with thesWingjof-the goggle valvemembers.

i For operating the cylinders 42, appropriate piping 68 for fluid'under'pre'ssu're may be pro-L .vided as shown .in Figure 6, such'piping .being preferably controlledby'asingle three-way valve I 69 by means of whioh'all pistons are movable in l .the time thatthe goggleivalves'are being, changed.-

- In operating eithergogglevalveit is merely nec I essary to loosen'jthe holdinglnuts 62 of the ring: 40 against theg'ogg'levalve in placeand then re+ 75 tract the ring by user): the hydr'auliccylinders unison. A pipe'll is-also provided forbleeding] off the gas which leaks past the valve A during Adapted to engage in the. appro:

42. When this occurs, the action of the spring 58 or 58' will be to move the goggle valve out of contact with the seat 51 and thus permit the valve to be swung on its axis. In the form shown in the drawings, each goggle member since it is counterweighted with some degreeiof accuracy is adapted for manual operation, it being noted. that either member is inoperative when the counterweight is nearest the ground, as for example the position shown for counterweight 30 10 in Figures 4 and 5. If necessary or desirable, the valve members may be actuated by power means, not shown.

In the operation of our improved system, it may be supposed a given stove on blast is to be cut out 15 of the system and a freshly heated stove is to be cut in. The fresh stove in which the combustion process has just been stopped is at atmospheric pressure. Both the gate valve A and the spectacle valve B of this stove have been closed 20 during the firing period butbe'c'ause of th'efleakage past the valve A, pressure'of thejcombustible gas from the hot blast main has been built up between these valves. The valve 70 in'vent'pipe 'll is then opened which willrelieve this pressure 25 whereupon the valve seat 3'? will'be loosened by loosening the bolts 62 and proper operationof the control valve 69. The open goggle'37 is now swung upwardly into open position and the valve I seats tightened. Since atmospheric-pressure errists at both sides of the goggle valve at the time of opening, there will be no appreciable escape of gas through the opening occupied by the goggle valve while it is being moved. The stove to be cut in isthen purged of combustion gases and-" brought up to the pressure existing in the hot blast main during which process'the gate valve A remains closed. This valve is then openedand hot gas under pressure is permitted to flow from the stove into the hot blast main and this phase-" 4 of reversal of the stove is-thus completed. The

' cooled off stove which waspreviously ontheblast now remains to be cut out of the system. This is accomplishedby closing the outer valve A," the goggle valve B remaining open. Pressureistheri released fro-m the stove to the gas' 'holderand the stove purged of residual gas by steam or a neutral gas. The stove is now at atmospheric pressure, eXceptfor slight leakage of gas through the closed outer hot gas valve A. This, however? may be vented from the spool between the valves by use of the vent '71. When-this hasbeen-done the goggle valve seat 38 is released'and the blind goggle valve member 29' swung into operative p0 sition.- Here again 'pressure on either side of the goggle valve is atmospheric and leakage through the opening in'the conduit occupied by the valve does not ocourduringthe'valve changing operation. The valve seat'38 is then brought home against the closed valve; 'Itwill be noted 0 that even should the gogglev'alve leak, such leakage will be to the atmosphere and willgnot bje into the stove undergoing firing. I l f f It will be evident that in lieu of a goggle valve we may use any valve oflth'e sliding type and that various other means than that shownmay be used to operate the valve'seats; I I We claim:

1. In combinationwith a sourceof hot gas.

under pressure, a conduit, the interior of which is subjected tosaid pressure, a valve in said conduit, a second valve of the? goggletype insaid conduit beyond the valve first mentioned'in the direction of lower pressure, andmeans for bleed;v

" ing 01? the gas pressure building up'between said valves by leakage past said valve first mentioned when said goggle valve is being moved.

2. In a system for heating combustible gas under superatmospheric pressure comprising a battery of regenerative heating units, means for supplying each individual unit with combustible gas to be heated and means for burning fuel in each of said units to heat the same up prior to admitting the combustible gas thereto, a hot blast main connecting said units, a connection from said main to each of said units, a valve in at least one of said connections of the type making a substantially absolute seal against the admission of gas from the main into the regenerative heating unit associated therewith, and means including a second valve for holding back to pressure in the blast main while the first mentioned valve is being operated at a pressure then prevailing in the unit associated therewith, which pressure is lower than the hot blast main pressure.

3. In a system for heating combustible gas under superatmospheric pressure comprising a battery of regenerative heating units, means for supplyng each individual unit with combustible gas to be heated and means for burning fuel in each of said units to heat the same up prior to admitting the combustible gas thereto, a hot blast main connecting said units, a connection from said main to each of said units, a valve in at least one of said connections of the type making a substantially absolute seal against the admission of the gas from the main into the regenerative heating unit associated therewith, means including a second valve of the type operable under a substantial difference in pressure on either side thereof but permitting slight leakage past such valve, and means for bleeding off the accumulated gas between the valves.

4. In a system for heating combustible gas under superatmospheric pressure comprising a battery of regenerative heating units, means-for supplying each individual unit with combustible gas to be heated and means for burning fuel in each of said units to heat the same up prior to admitting the combustible gas thereto, a hot blast main connecting said units, a connection from said main to each of said units, a valve in at least one of said connections of the type making a substantially absolute seal against the admission of gas from the main into the regenerative heating unit associated therewith, which valve is adapted for operation at atmospheric pressure only, and means including a second valve for holding back the pressure in the hot blast main while the first mentioned valve is being operated at atmospheric pressure.

5. In a system for heating combustible gas under superatmospheric pressure comprising a battery of regenerative heating units, means for supplying each individual unit with combustible gas to be heated and means for burning fuel in eachof said units to heat the same up prior to admitting the combustible gas thereto, a hot blast main connecting said units, a connection from said main to each of said units, a valve of the goggle type in at least one of said connections, said valve being movable across a cross section of the conduit and having means associated therewith for binding said valve against such section of the conduit so as to make a substantially absolute seal against the admission of gas from the main into the regenerative heating unit associated therewith, and means including a second valve for holding back the pressure in the last main while the first mentioned valve is being operated at a pressure then prevailing in the unit associated therewith, which pressure is lower than the hot blast main pressure.

EDWIN W. BEARDSLEY. MYRON W. COLONY. 

